PV surplus for use in charging batteries (e.g. motor vehicle); charging takes place with constant power according to own specifications (settings).
Input values (settings of the user):
- Input Default Power Charge:
This is the default value for the charging power, as it must be preset at the wallbox, for example. If the wallbox only has a default value, enter it here. Please note that there is no feedback about the charging, so that the entered value is used for all calculations. (EIS9, DPT 14, 4 byte floating point number)
- Input Current power:
The power values of the house connection meter (bidirectional meter). Where positive values are consumption (power drawn) and negative values are yield (power fed into the public grid), (EIS9, DPT 14, 4 byte floating point number).
- Input FB Switching.
Is the feedback, e.g. of the wallbox, when it is in charging mode. Without active feedback, it is the same group address that is used to switch the wallbox. (EIS1, DPT 1, 1 bit boolean)
- Input switching threshold:
This is the limit value for switching to "charging" mode. Both negative and positive values should be possible. Negative values - it is already being fed into the public grid. (EIS9, DPT 14, 4 byte floating point number)
- Power OFF Offset input:
Only positive values apply here; from when charging is stopped. If the limit value is the sum of the switching threshold plus the power OFF offset. (EIS9, DPT 14, 4 byte floating point number)
Initial values:
- Output switching:
Group address for switching loading. (EIS1, DPT 1, 1 bit boolean)
Since only one measuring point (house connection) is available, further values must be specified manually. It is assumed that charging is carried out with constant power. In the statistics element, 10 values are periodically used for averaging in order to compensate for extreme fluctuations. This makes a measuring period sufficiently long (e.g. interval 1 min, measuring period equal to 10 min. When switching to charging, the consumption at the meter increases. This is taken into account in the logic group.
The logic group is always started in Load Off operating mode so that a measuring period can also start.
BAB TECHNOLOGIE
(242; 2023.06)
